thereforeKK [ˋðɛˏrfɔr] /ˈðɛˌɹfɔɹ/副詞1因此、所以、故偏正式The data was incomplete, and the results were therefore unreliable.資料並不完整,因此結果並不可靠。2由此可知、據此用於推理或論證All mammals need oxygen; whales are mammals and therefore need oxygen.所有哺乳類都需要氧氣;鯨魚是哺乳類,由此可知牠們也需要氧氣。